Bui. ]02, Bureau of Entomology, U. S. Dept. of Agriculture. 



Plate V. 



Grapefruit Leaf, Showing Yellow Aschersonia Infecting the Cloudy-Winged 



White Fly. 



[The parasitic fimt,'ous pustules are overK'rown in spots l)y sooty mold ami sooty mold is also shown 

 developing around the ed^'es of infected pnp:c. More, rather than less, sooty mold usually accom- 

 panies as extensive an infestation by the yellow fungus as that shown on this leaf. (Original. )1 



